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90 Commits

Author SHA1 Message Date
Brian Anderson
9e01e05f3b Convert rustc::middle::trans to istrs. Issue #855 2011-08-27 15:54:45 -07:00
Brian Anderson
9c9c5c9054 Remove ast::identistr. Issue #855 2011-08-27 15:54:44 -07:00
Brian Anderson
03119fe269 Convert ast::ident to istr. Issue #855 2011-08-27 15:54:44 -07:00
Brian Anderson
652332f9d4 Convert std::map::new_str_hash to istrs. Issue #855 2011-08-27 15:54:44 -07:00
Brian Anderson
608f7ccded Move ast::pat_id_map to ast::util 2011-08-25 14:15:54 -07:00
Marijn Haverbeke
b9112525ba Move to a more lightweight builder system 
You now do

    bld::Ret(bcx, someval)

where you used to say

    bcx.build.Ret(someval)

Two fewer boxes are allocated for each block context, and build calls
no longer go through a vtable.
 2011-08-24 16:48:10 +02:00
Marijn Haverbeke
9f44df65ef Ensure values created in an alt guard are cleaned up properly 2011-08-24 14:01:56 +02:00
Brian Anderson
152cbaade7 Move functions from syntax::ast to syntax::ast_util 
This leaves syntax::ast just defining the AST, which strikes me as somewhat
nicer
 2011-08-22 10:44:04 -07:00
Marijn Haverbeke
7d08678b74 Implement pattern guards 
The syntax is

    alt x {
        mypat where mycond { ... }
    }

The condition may refer to any of the variables bound by the pattern.
When a guard fails, pattern-matching continues with the next pattern.

Closes #857
 2011-08-22 17:49:31 +02:00
Marijn Haverbeke
a2466233b4 Fix bug introduced by 1a45a84e73 2011-08-22 17:49:31 +02:00
Marijn Haverbeke
1a45a84e73 Start using copy glue to copy bits that may contain ivecs 
This is not currently necessary, but will be, when I land the new ivec
representation.
 2011-08-22 14:17:27 +02:00
Marijn Haverbeke
7588a89553 Rename copy_glue back to take_glue 2011-08-22 10:42:56 +02:00
Brian Anderson
518dc52f85 Reformat 
This changes the indexing syntax from .() to [], the vector syntax from ~[] to
[] and the extension syntax from #fmt() to #fmt[]
 2011-08-20 11:04:00 -07:00
Marijn Haverbeke
cd440d338e Remove or _-prefix all unused function arguments 
This should make the compilation process a bit less noisy.
 2011-08-18 10:02:13 +02:00
Erick Tryzelaar
e4a0f997fb Port the compiler to the typaram foo<T> syntax. 2011-08-16 15:05:56 -07:00
Brian Anderson
f05a91a0dc Rename std::ivec to std::vec 2011-08-16 10:36:19 -07:00
Lindsey Kuper
f91351aaf6 The wonky for...in... whitespace was bothering me. Sorry! 2011-08-15 22:19:50 -07:00
Graydon Hoare
814bf41d89 Add operator 'copy', translates as fall-through. 2011-08-15 15:44:41 -07:00
Paul Stansifer
ebb16e6a25 Use span stacks to track macro expansion for less troublesome error messages. 2011-08-15 15:35:28 -07:00
Paul Stansifer
c48036c0b7 Make spans into stacks (to store expansion backtraces). 2011-08-15 15:35:27 -07:00
Paul Stansifer
d2f9b15052 Rename a field (so that macros can mention it). 2011-08-15 15:35:27 -07:00
Marijn Haverbeke
3f127e397f Add tuple patterns 2011-08-15 13:20:16 +02:00
Erick Tryzelaar
8b15045224 Port the compiler to the ivec type [T] syntax. 2011-08-09 15:53:26 -07:00
Tim Chevalier
e0985c1060 Handle alt on a _|_ - typed value 
Return the result of the discriminant from trans_alt,
rather than nil, in the _|_ case. This was breaking the
enclosed test case (alt-bot-2) when optimization was disabled.

Closes #769
 2011-08-04 16:07:26 -07:00
Tim Chevalier
948f8090ae Handle _|_ - typed discriminants in alts correctly 
Stop me, won't you, if you've heard this one before?

Closes #794
 2011-08-02 19:02:38 -07:00
Tim Chevalier
731797d075 In trans, don't assume both sides of a binop have the same type 
This was at least partially responsible for Issue 777.

    The only solution I can think of is for trans to just not generate
    code for a comparison if one or both sides has type _|_. Since
    that means evaluating that subexpression diverges, it should be ok
    to never do the comparison. Actually generating code for the
    comparison would trip an LLVM assertion failure.
 2011-08-02 17:36:41 -07:00
Marijn Haverbeke
6c9b90d06a Be a little more clever about picking columns to match on in trans_alt 
This should result in slightly more efficient matching of 'complex'
patterns with multiple discriminants in them.
 2011-08-02 12:57:27 +02:00
Marijn Haverbeke
f8fa574864 Copy locals created by destructuring on the content of a box 
This is required so that assigning to these locals doesn't clobber
the content of the box.

(A possible optimization would be to only do this copying for
locals that actually are assigned to.)
 2011-08-02 12:09:15 +02:00
Marijn Haverbeke
985c32ef4c Partially implement destructuring locals 
You can now say

    let {bcx, val} = some_result_returner();

Similar for loop variables. Assigning to such variables is not safe
yet. Function arguments also remain a TODO.
 2011-08-01 17:51:37 +02:00
Marijn Haverbeke
6e2a7bff7f Fix damage done by the pretty-printer 2011-07-27 15:54:33 +02:00
Marijn Haverbeke
df7f21db09 Reformat for new syntax 2011-07-27 15:54:33 +02:00
Marijn Haverbeke
aea537779e Remove all uses of tuples from the compiler and stdlib 2011-07-26 14:06:02 +02:00
Michael Sullivan
3b2d23b2cd Move a bunch of trans into trans_common, including the context structures. 
Probably more should be moved or split off into other files. My algorithm
was something along the lines of: move the contexts and their transitive
dependencies along with some functions to work with them. I stopped when
I was going to have to start pulling glue generation, which really
should go into a trans_glue file.
 2011-07-21 17:39:06 -07:00
Marijn Haverbeke
a0ab57b3f6 Fix trans_alt to handle unreachable branches without blowing up 2011-07-19 17:07:51 +02:00
Eric Holk
8afb1a7c63 refactor: Move the LLVM type and constant constructors into a new module. 2011-07-14 17:08:45 -07:00
Patrick Walton
e76f44453b rustc: First stab at interior string literals, untested as of yet 2011-07-14 11:47:20 -07:00
Graydon Hoare
39151f2ad8 Prohibit trailing whitespace under 'tidy' script. Clean up all caught cases. 2011-07-13 15:44:09 -07:00
Marijn Haverbeke
8d68b0462a Refactor out some repetetive code in trans_alt 2011-07-13 11:33:46 +02:00
Marijn Haverbeke
be4f7354b4 Add box patterns 
An @ can now be prepended to a pattern to unbox something during
pattern matching.

Closes #661
 2011-07-13 11:11:43 +02:00
Marijn Haverbeke
12d5532166 Use switches rather than chained conditionals to compile alt matches 
This also moves the alt-related trans code into its own file.

Closes #467
 2011-07-13 00:38:24 +02:00